Centrifugal bolting-machine



(No Model.)

i RSTETTER. GENTRIPUGAL BOLTING MACHINE.

N6. 287,481. Patented, oct. 30, ma

UNITED STATES PATENT Ormes.

FERDINAND strait-TER, onDUBUQUn, low-A.

cENTRlFUGAl. BoLTlNc-MACHINE.

SPECIFICATION forming part of Letters Patent No. 287,481, dated October30, 1883. nppncann inea March 8,1883. (No model.)

more fully described, and pointed out in they claims, tending to improvethe machine and increase its efficiency and durability. The invention isillustrated in the accompanying drawings, in which Figurel is a lonfgitudinal section. Fig. 2 shows the manner of attaching the boltingfabricto the frame. Fig. 3 is a view of one of the brads which fastenthe edge of the gauze to the bolt-frame. The invention and the apparatuswhich em'- bodies it consist in general of a case or frame supported bysuitable standards, and containing independently-rotating beaters andbolt. The meal is fed into the interior through an opening in the headof the bolt, and is discharged at the opposite end, while ascrewconveyer in the bottom of the casing discharges the puriedmaterial. The entire apparatus is driven from a single pulley mountedupon a main driving-shaft.

Referring more particularly to the drawings, A represents the case, andB B the supporting-standards or frame-work.

C represents the main driving-shaft, which is journaled in the upperpart of the main frame` Upon this shaft is mounted the beater D,consisting of radial armsl 1, to which are secured blades 2 2, which, bythe rotationcf the shaft, receive a rapid rotary motion. The beater ismounted upon the shaft within the bolt E, which surrounds it, and whichhas a less rapid independent rotation, as hereinafter explained.

The head 3 of the. bolt, through which the meal is fed to the interior,is composed of two sections, 4 5. The central section, 4, is astationary circular disk, and is secured to the casing A by bolts 6 6.The upper edge of the 5o circular disk 4 is beveled off, as shown, tofit snugly the correspondingly-beveled edge of the annular disk or head5. Any suitable packing may line the meeting edges, to prevent theegress of dust, but not to obstruct the free revolution of the bolt. y I

The annular section 5 is connected by arms 7 toalongitudinally-perforated hub or sleeve, F, through which passes theaxle or drivingshaft, the stationary disk 4 having a central opening, topermit the hub to move freely. 6o The meal is fed through a tube, G,which passes through the stationary disk 4 and discharges just insidesuch disk. The hub F, at the opposite or discharge end, is of similarconstruction. A large outlet-op ening is formed 6 5 in the head of thebolt, (which at this end is solid,) and a series of elevators, G', isattached to the head of the bolt, to assist in discharging the bran.This opening also permits a sufficient quantity of air to enter to coolthe meal, and a plate, H, is mounted upon the hub F, at the inlet end,to break the draft. This plate, which is made preferably of zinc, hasopenings near its edge, through which the material passes.

The bolt is rotated at much lower speed than the beater by a pulley, I,mounted on the hub F outside the casing. Motion is imparted to thispulley from the driving-shaft by pulleys I vI2 I3, the two latter ofwhich are Xed on the shaft of the screw-conveyer J in the bottom of vthecasing. The bolt is of hexagonal or octagonal form, andis, as usual,covered with a wire or silk gauze fabric. The manner of attaching thisfabricV is shown more clearlyin Fig. 2.

The heads or end disks of the bolt are connected by rounded bars 10.Into these bars are driven (from the outside) nails l1. (Shown in detailin Fig. 3.) Each nail consists of an elongated shank, apointed brad, andaflat intermediate head, which bearson the outer surface of the bar, thebrad projecting outward. The edge of the gauze fabric, or thebinding-strip attached thereto, is pressed down upon the bar l0, thebrads projecting through. The binding on the next section of gauze isthen lapped over the rst, and the two thicknesses secured by a slat, I2,pressed `down upon the brads, which may be, if necessary, more firmlyheld roo the bOlt.

by one or two screws, 13. The silk or wire is attached in the samemanner upon all sides of The silk fabric may be easily removed from anyone side of the bolt for repair or renewal. It Vis also rendered moreuniformly taut and elastic.

Having described my invention, I claim- 1. In acentrifugalbolting-machine, the combination of an inclosing-case, arevolving shaft, B, a beater, a bolting-reel, hubsF, and a head composedof a stationary section,4, secured to the case, and an annularclose-fitting disk connected to the hub, and an independent feedspoutpassing through the part 4, and driving mechanism.

2. The combination of the driving-shaft C andthebeater with the hubs Fof the bolting- FERDINAND STETTER.

Witnesses: p

PETER KIENE, Jr. FRANK H. WEIHE.

